build.gradle

apply plugin: 'com.android.library'

def safeExtGet(prop, fallback) {
    rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback
}
android {
    compileSdkVersion safeExtGet('compileSdkVersion', 30)
    buildToolsVersion safeExtGet('buildToolsVersion', "30.0.3")

    defaultConfig {
        minSdkVersion safeExtGet('minSdkVersion', 18)
        targetSdkVersion safeExtGet('targetSdkVersion', 30)
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.facebook.react:react-native:+'
}